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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility. The Water Utility provides more than 1.3 million customers in King County with a reliable water supply; the Drainage and Wastewater Utility collects and disposes of sewage and storm water; and the Solid Waste Utility collects and disposes of recycling, yard waste, and residential and commercial garbage. All three utilities strive to operate in a cost-effective, innovative and environmentally responsible manner. SPU also houses the Engineering Services line of business, which serves both City departments and outside agencies, providing efficient, customer-oriented engineering services that assist clients with replacing, improving, and expanding facilities with the least possible disruption to the community.